Fair Value Measurements - Financial Assets and Liabilities at Fair Value (Details) - USD ($) $ in Millions	Jan. 01, 2017	Jan. 03, 2016
Equity Securities
Financial assets and liabilities at fair value
Equity investments	$ 520	$ 528
Unrealized Gain	757	979
Unrealized loss	68	13
Level 1
Financial assets and liabilities at fair value
Equity method investments, fair market disclosure	1,209	1,494
Debt securities	0
Level 2
Financial assets and liabilities at fair value
Equity method investments, fair market disclosure	0
Debt securities	12,087	8,316
Level 3
Financial assets and liabilities at fair value
Equity method investments, fair market disclosure	0
Debt securities	0
Interest Rate Contract
Financial assets and liabilities at fair value
Non-current assets included in interest rate contracts	23	20
Non-current liabilities included in interest rate contracts	382	239
Equity Contract [Member]
Financial assets and liabilities at fair value
Derivative Instruments in Hedges, Liabilities, at Fair Value	57
Equity Contract [Member] | Level 2
Financial assets and liabilities at fair value
Derivative Instruments in Hedges, Liabilities, at Fair Value	57
Designated as Hedging Instrument
Financial assets and liabilities at fair value
Derivative assets	778
Derivative liabilities	1,162
Designated as Hedging Instrument | Level 1
Financial assets and liabilities at fair value
Derivative assets	0
Derivative liabilities	0
Designated as Hedging Instrument | Level 2
Financial assets and liabilities at fair value
Derivative assets	778	480
Derivative liabilities	1,162	599
Designated as Hedging Instrument | Level 3
Financial assets and liabilities at fair value
Derivative assets	0
Derivative liabilities	0
Designated as Hedging Instrument | Interest Rate Contract
Financial assets and liabilities at fair value
Derivative assets	31
Derivative liabilities	382
Designated as Hedging Instrument | Interest Rate Contract | Level 1
Financial assets and liabilities at fair value
Derivative assets	0
Derivative liabilities	0
Designated as Hedging Instrument | Interest Rate Contract | Level 2
Financial assets and liabilities at fair value
Derivative assets	31	28
Derivative liabilities	382	241
Designated as Hedging Instrument | Interest Rate Contract | Level 3
Financial assets and liabilities at fair value
Derivative assets	0
Derivative liabilities	0
Designated as Hedging Instrument | Foreign exchange contracts
Financial assets and liabilities at fair value
Derivative assets	747
Derivative liabilities	723
Designated as Hedging Instrument | Foreign exchange contracts | Level 1
Financial assets and liabilities at fair value
Derivative assets	0
Derivative liabilities	0
Designated as Hedging Instrument | Foreign exchange contracts | Level 2
Financial assets and liabilities at fair value
Derivative assets	747	452
Derivative liabilities	723	358
Designated as Hedging Instrument | Foreign exchange contracts | Level 3
Financial assets and liabilities at fair value
Derivative assets	0
Derivative liabilities	0
Not Designated as Hedging Instrument | Foreign exchange contracts
Financial assets and liabilities at fair value
Derivative assets	34
Derivative liabilities	57
Not Designated as Hedging Instrument | Foreign exchange contracts | Level 1
Financial assets and liabilities at fair value
Derivative assets	0
Derivative liabilities	0
Not Designated as Hedging Instrument | Foreign exchange contracts | Level 2
Financial assets and liabilities at fair value
Derivative assets	34	33
Derivative liabilities	57	$ 41
Not Designated as Hedging Instrument | Foreign exchange contracts | Level 3
Financial assets and liabilities at fair value
Derivative assets	0
Derivative liabilities	$ 0